Solve. Express any nonreal complex numbers with i notation.x4 - 2x2 - 8 = 0
A. x = ±, ± 2i
B. x = ± 2, ± i
C. x = 2, i
D. x = -4, 2
Answer: B
Mathematics
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Solve the problem.A plane flies 450 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 24 mph, what is the speed of the plane in still air?
A. 192 mph B. 217 mph C. 197 mph D. 182 mph
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Use implicit differentiation to find dy/dx and d2y/dx2.xy - x + y = 2
A. =
;
=
B. = -
;
=
C. =
;
=
D. = -
;
=
Mathematics
Graph the set of points whose polar coordinates satisfy the given equation or inequality.r ? 4
A.
B.
C.
D.
Mathematics
Add. 16,914 2147 + 25,416
A. 45,577 B. 44,577 C. 44,477 D. 43,477
Mathematics